a-ii aaaa aaab aaac aaai aaas aaba aabb aabc aabi aabt aaca aacb aacc aaci aacs aact aacu aaib aaic aaii aais aasa aasc aasi aass aast aasu aata aatc aatt aaus abaa abab abac abai abas abat abau abb- abba abbb abbi abbs abbt abca abcb abcc abci abcs abct abia abib abic abis abit abiu abs- absa absi abss absu abta abts abtu abua abus abut ac-t acaa acab acac acai acas acat acba acca accc acci accs acct accu aci- acia acic acis acsa acsc acsi acss acst acta actc acti acts actt actu acu- acus acut aiai aias aiba aica aicc aics aiia aiib aiic aisa aisb aisi aist aita aiti aits aitt aitu aiui asaa asab asac asai asas asat asau asba asbu asc- asca ascb ascc asci asct asia asic asii asis asit assa assc assi asss asst assu asta astb astc asti asts asub asui asus at-t ataa atab atac atai atas atat atbs atca atcc atcs atia atic atis atit atiu atsb atsc atsi atst atta atti atts attu atua atub atuc atus auaa auca auci auct auis ausa aust ausu aut- auts ba-i baaa baas baat baba babb babi babs babu bac- baca bacc baci bacs bact baia baib baic bais bait basa basc basi bass bast basu bata batc bati bats batt batu bau- bbas bbau bbbb bbbs bbci bcaa bcas bcat bcbc bcbs bcca bccc bcci bccs bcia bcis bcit bcsa bcsc bcss bctc bcts bcuc bias biat biba bibb bibi bibs bica bicc bici bics biis bis- bisa bisc biss bist bisu bita bitc bits bitt bitu bsaa bsac bsas bsat bsci bscs bsic bssc bsts btaa btcc btcs btss bttb btus buat buba bubb bubi bubs bubu buca bucc buci bucs bucu buic buis buit buiu busa busc busi buss bust busu but- buta buti buts butt buus caaa caab caac caas caat caba cabi cabs cabu cac- caca cacc caci caia caib caic cais cait caiu casa casb casc casi cass cast casu cat- cata catb catc cati cats catt catu cauc caus caut cbac cbat cbbc cbbs cbca cbcc cbcs cbct cbcu cbia cbit cbsa cbsc cbsi cbta cbtc cbus ccaa ccab ccac ccai ccas ccat ccba ccbc ccca cccb cccc ccci cccs cccu ccic ccii ccis ccsa ccsi ccss ccst cctb cctc cctt ccuc ccus ccut ciaa cias ciat ciau ciba cibc cibi cica cicc cici cics cict cicu ciia ciii ciis ciit cis- cisa cisc ciss cist cita citb citi cits citt citu ciuc cius csaa csab csac csas csat cscb cscc csci cscs csia csib csis csit cssa csta cstc csts csua csus ctab ctba ctbi ctbs ctca ctia ctic ctsa ctsc ctss ctsu ctta ctts cuau cub- cuba cubb cubi cubs cuca cucc cuci cui- cuis cuit cusa cusb cuss cust cusu cut- cuta cutc cuts cutt iaaa iaac iaai iaas iaat iaba iaca iacc iacs iact iacu iaia iais iasa iasc iasi iata iatc iati ibac ibas ibat ibca ibcs ibia ibis ibsa ibss ibtb ibtc ibts ibus icaa icab icac icai icas icat icbc icbs icca iccb iccc icci iccs icct iccu icis icsa icsb icsc icsi icss icst icta icts icub icus iiac iias iica iiii iiis iiit iisc iisi iist iisu iita iitt iiuc is-a isac isai isas isat isba isbt isca iscc isci iscs isct iscu isia isic isis isit issa issc issi isss issu ista istc isti ists isua isus itaa itac itai itas itat itbs itcs itia itic itis itsa itsi itsu itta iucc iuiu iuss iust s-ib s-ic s-ii sa-c saab saac saas saat saba sabb sabc sabi sabs sabu saca sacc saci sacs sact sacu saia saic sais sait sasa sasc sasi sass sast sata satb satc sati sats satt satu saua sauc saus saut sbaa sbac sbai sbas sbbs sbca sbcc sbcs sbct sbia sbic sbsa sbsi sbst sbtc sbus scaa scab scac scai scas scat scba scbi sccc sccs scct sci- scia scic scis scit scsa scsc scsi scst scsu sctc scts scua scub scut siaa siab siac siai sias siat siau siba sibc sibi sibs sibu sica sicc sici sics sicu siit sisa sisc sisi siss sist sisu sit- sita sitc siti sits sitt situ siui sius siut ssaa ssab ssac ssas ssat ssau ssca sscc ssci sscs ssis ssit sssa sssb sssc sssi ssss ssta sstb sstc ssts stab stac stai stas stat stau stbc stbs stca stcc stcs stcu stia stib stic stis stit stsi stss sttc stub stuc stus stut suas suat sub- suba subb subi subs suc- succ suci sucs suis suit sus- susa susi suss sust susu suta suti sutu suus taa- taas taat taba tabb tabc tabi tabs tabu taca tacc taci tacs tact taia tais tait tasa tasb tasc tasi tass tast tasu tata tatb tati tats tatt tatu taua taub tauc taus taut tbas tbbs tbca tbcb tbcc tbit tbst tbta tcbs tcca tccc tccu tctc tcts tiaa tiab tias tiba tibi tibs tibu tica ticc tics tiit tiiu tisa tisb tisi tiss tist tita titc titi tits titt titu tsaa tsai tsat tsau tsbc tsca tscc tsia tsis tssa tssi tsst tstc tsts tsui ttab ttbb ttss tttt tuas tuat tuba tubb tubs tubu tuca tucc tuis tuit tuiu tusa tusc tusi tuss tust tuta tuti tuts tutt tutu uabc uaca uasa uata uatu uaua ubac ubba ubbi ubic ubii ubis ubit ucai ucas ucat ucbc ucca ucci ucsa ucsb ucsc ucst ucsu ucua ucut uica uist uits us-a usaa usac usas usat usba usbc usbs usca uscc uscs usia usis ussa ussb ussc usss usst ussu usta ustb ustc usti usts usua usui usus utac utai utas utau utia utis utsa utsc utti uttu uusi uuta uuuu